include/linux/fscache.h

26 #define fscache_resources_valid(cres) ((cres)->cache_priv)
33 #define fscache_resources_valid(cres) (false)
421  * @cres: The resources to check.
426 const struct netfs_cache_ops *fscache_operation_valid(const struct netfs_cache_resources *cres)
428 	return fscache_resources_valid(cres) ? cres->ops : NULL;
433  * @cres: The cache resources for the read being performed
436  * Begin a read operation on behalf of the netfs helper library.  @cres
440  * @cres->inval_counter is set from @cookie->inval_counter for comparison at
450 int fscache_begin_read_operation(struct netfs_cache_resources *cres,
454 		return __fscache_begin_read_operation(cres, cookie);
460  * @cres: The cache resources for the read operation
464 static inline void fscache_end_operation(struct netfs_cache_resources *cres)
466 	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
469 		ops->end_operation(cres);
474  * @cres: The cache resources to use
481  * Start a read from the cache.  @cres indicates the cache object to read from
504 int fscache_read(struct netfs_cache_resources *cres,
511 	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
512 	return ops->read(cres, start_pos, iter, read_hole,
518  * @cres: The cache resources for the write being performed
521  * Begin a write operation on behalf of the netfs helper library.  @cres
525  * @cres->inval_counter is set from @cookie->inval_counter for comparison at
535 int fscache_begin_write_operation(struct netfs_cache_resources *cres,
539 		return __fscache_begin_write_operation(cres, cookie);
545  * @cres: The cache resources to use
551  * Start a write to the cache.  @cres indicates the cache object to write to and
563 int fscache_write(struct netfs_cache_resources *cres,
569 	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
570 	return ops->write(cres, start_pos, iter, term_func, term_func_priv);